Hi, I am an US 8.5 in my normal shoes but in the classic, suede, and jelly reva's I am an 8 or 38. In amy, quinn, and maggie, I'm also an 8. In patent reva's I'm an 8.5 or 38.5.The general rule would be is stick to your normal size in TB's except for pantent one's especially reva's, go at least a half size up or else they will be really uncomfotable. I went with the 8 over 8.5 though because with time the elastic will stretch so to ensure the shoes still fit well I decided to go a half size down. HTH.